INSTRUMEN OSEANOGRAFI

Presentasi berjudul: "INSTRUMEN OSEANOGRAFI"— Transcript presentasi:

1 INSTRUMEN OSEANOGRAFI

2 INSTRUMEN OSEANOGRAFI:
Winch CTD Tide Gauge Buoy Mooring

3 1. WINCH

4 2. CTD

5 Metode Pengukuran CTD:
Sebelum 1950-an ~ Metode Titrasi Knudsen Reversing Mercury Thermometer Mulai 1950-an: Estimasi salinitas dari konduktivitas listrik Pada 1970 mulai penggunaan PROFILER Peluang-peluang riset dengan adanya PROFILER: Struktur Mikro Perpindahan bahang dan garam Karakteristik fisik-kiam air laut

6 Spesifikasi Umum CTD

7 SENSOR KONDUKTIVITAS:
C ~ Konduktivitas listrik N ~ jumlah ion n ~ valensi e ~ muatan elementer u+ dan u- ~ mobilitas ion positif dan negatif Hubungan antara konduktivitas dan resistensi C ~ konduktivitas, R ~ resistansi G ~ konduktansi k ~ “tetapan sel” l ~ panjang kolom air, dan q ~ penampang melintangnya

8 Ketergantungan terhadap tekanan dan suhu
Nilai k bervariasi terhadap perubahan tekanan hidrostatik dan ekspansi thermail dan dapat dinyatakan sebagai: To dan Po adalah aras acuan (reference level), alfa adalah koef ekspansi linear dan beta adalah koef. kompressibilitas linier (1/3 dari kompressibilitas volume). Persamaan untuk mengoreksi konduktivitas adalah:

9

10 CONDUCTIVITY

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12 SENSOR SUHU: Dua jenis: (lamban) resistance thermometer dan (cepat) thermistor Bahan thermistor: platinium, tembaga kepekaan terhadap perubahan tekanan ~ 0,040C/km

13 TEMPERATUR SENSOR (CTD)

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15 SEACAT Profiler (CTD Profiler)

16

17 Posisi Penempatan CTD bersama Rosette

18 Deployment Rosette dan CTD

19 Contoh Data CTD * Sea-Bird SBE 9 Raw Data File:
* FileName = C:\INSTANT\INSTAN16.DAT * Software Version 4.232 * Temperature SN = 2507 * Conductivity SN = 2116 * Number of Bytes Per Scan = 27 * Number of Voltage Words = 5 * System UpLoad Time = Jan :03:31 * Command Line = seasave ** Ship : KR. Baruna Jaya VIII ** Cruise : INSTANT-2003 ** Station : INSTAN16 ** Latitude : S ** Longitude: E ** Time : 21:00 GMT ** Date : JANUARY ** Depth : 1189 m ** Weather : Smooth Wavelet ** Operator : SUGI ** Class : F1 ODV ** Predict : CHAMPION # nquan = 12 # nvalues = 1071 # units = specified # name 0 = prDM: Pressure, Digiquartz [db] # name 1 = depSM: Depth [salt water, m] # name 2 = t068C: Temperature [ITS-68, deg C] # name 3 = potemp068C: Potential Temperature [ITS-68, deg C] # name 4 = sal00: Salinity [PSU] # name 5 = c0mS/cm: Conductivity [mS/cm] # name 6 = density00: Density [density, Kg/m^3] # name 7 = flC: Fluorescence, Chelsea Aqua 3 Chl Con [ug/l] # name 8 = obs: OBS, Backscatterance (D & A) [NTU] # name 9 = xmiss: Beam Transmission, Chelsea/Seatech/Wetlab CStar [%] # name 10 = nbf: Bottles Fired # name 11 = flag: e+00 Contoh Data CTD

20 Contoh Data CTD # interval = decibars: 1
# start_time = Jan :03:31 # bad_flag = e-29 # sensor 0 = Frequency 0 temperature, 2507, 27-Mart-03s # sensor 1 = Frequency 1 conductivity, 2116, 08-May-03, cpcor = e-08 # sensor 2 = Frequency 2 pressure, 69686, 01-April-2003 # sensor 3 = Extrnl Volt 0 oxygen, current, , 06 April 1998 # sensor 4 = Extrnl Volt 1 oxygen, temperature, , 06 April 1998 # sensor 5 = Extrnl Volt 2 pH, , 27 March 2003 # sensor 6 = Extrnl Volt 3 oxidation reduction potential, , 03 January 1998 # sensor 7 = Extrnl Volt 4 fluorometer, chelsea, , 24 April 2003 # sensor 8 = Extrnl Volt 5 transmissometer, primary, CST-197PR, 01 May 2003 # sensor 9 = Extrnl Volt 6 backscatterance, 1165, 26 March 2003 # sensor 10 = Extrnl Volt 7 irradiance (PAR), 4521, 14 April 2003 # sensor 11 = Extrnl Volt 9 surface irradiance (SPAR), degrees = 0.0 # datcnv_date = Jan :55:51, 1.00 # datcnv_in = C:\INSTANT\Instan16.dat C:\INSTANT\Instant.con # datcnv_skipover = 0 # binavg_date = Jan :00:39, 1.00 # binavg_in = C:\INSTANT\temp\Instan16.cnv # binavg_bintype = decibars # binavg_binsize = 1 # binavg_excl_bad_scans = yes # binavg_skipover = 0 # binavg_surface_bin = no, min = 0.000, max = 0.000, value = 0.000 # file_type = ascii *END*

21 Contoh Data CTD e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00 e+00

22 Contoh plot profil CTD

23 Contoh plot profil CTD Laut Timor Selat Ombai Selat Lombok Selat Makassar

24 Contoh plot profil CTD

25 THE END